You make some great points about coaching the sprints. It seems that in many ways, the K.I.S.S. concept (Keep It Simple Stupid) seems to work the best. Coaches may be tempted to use more exercises, volume and intesity to get ahead but it is the basics that probably help the most (including proper technique and stretching). I borrowed some of your very basic drills that I have seen you use and developed some of my own. In my second year of serious sprint coaching my athletes have produced outstanding results. Also, my jumpers are running faster and therefore jumping further based on an emphasis on speed development with the same approach.